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Packard 12 rod beating inserts
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Home away from home
 
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Anyone know why Packard put the oil hole off center
Attach file:  20211128_193928_HDR.jpg (176.17 KB)
Posted on: 2021/12/1 15:55
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Riki
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Re: Packard 12 rod beating inserts
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Home away from home
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Bet you meant bearing insert?
Posted on: 2021/12/1 18:58
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Re: Packard 12 rod beating inserts
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Forum Ambassador
 
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Don't the bearings cop a beating anyway?
Posted on: 2021/12/1 19:10
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Mal
/o[]o\ ====  Bowral, Southern Highlands of NSW, Australia "Out of chaos comes order" - Nietzsche. 1938 Eight Touring Sedan - SOLD 1941 One-Twenty Club Coupe - SOLD 1948 Super Eight Limo, chassis RHD - SOLD 1950 Eight Touring Sedan - SOLD What's this?  Put your Packard in the Packard Vehicle Registry! Here's how! Any questions - PM or email me at ozstatman@gmail.com |
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Re: Packard 12 rod beating inserts
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Home away from home
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The off centre hole is for the oil squirt orifice in the connecting rod
Posted on: 2021/12/1 19:18
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Re: Packard 12 rod beating inserts
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Forum Ambassador
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Typically the center hole is to feed oil to the wrist pin and the off-center one sprays oil to the thrust-side cylinder wall prior to the piston downstroke. Of course when installed in the rod cap, they are non-functional.
Posted on: 2021/12/2 9:12
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Re: Packard 12 rod beating inserts
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Home away from home
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1937 PACKARD Instructions state to face all 12 squirt holes to the starter side. Guessing they gave up on what they were gaining and just relied on the splash system which most engines were designed to.
Have seen these holes blocked off. Assume they were reaching for higher oil pressure.
Posted on: 2021/12/2 13:16
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Re: Packard 12 rod beating inserts
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Home away from home
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As the crank rotates the squirt hole will line up with the connecting rod oil feed. For the eights the oil squirt is directed at the camshaft and the piston slot. This is critical for the earlier cars with stamped cam roller carriers.
On the V-12 then where the oil is directed is determined by where the crankshaft hole is located. Blocking off the squirt hole is total bone head on motors with long connecting rods. I can image the conversation on that one: "We don't need no holes cuz I saw on the TV that small block bowties don't have no hole in them. Let's do what we seen on the TV."
Posted on: 2021/12/2 19:12
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Re: Packard 12 rod beating inserts
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Home away from home
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Carrillos. Made the rods. Besides racing rods. They make old car rods as well.
So I know they know what's up. They had the Packard rod as an example.. The new rods are a lot lighter. Attach file: 20190207_194909.jpg (149.64 KB)
Posted on: 2021/12/3 0:11
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Riki
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Re: Packard 12 rod beating inserts
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Home away from home
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1935 up Motor's Manual
'PISTON & ROD ASSEMBLE' Page 67 1936 Shop Manual (1407-08) Page 53 - 1937 Twelve section 1937 Shop Manual Page 120 packardinfo.com/xoops/html/downloads/1937-1938_ShopManual.pdf Page 4 in '12' specifications packardinfo.com/xoops/html/downloads/1939_DataBook.pdf WOOPS - Looks like they started specing it in 1935 1937 PACKARD Instructions state to face all 12 squirt holes to the starter side. Guessing they gave up on what they were gaining and just relied on the splash system which most engines were designed to.
Posted on: 2021/12/3 11:30
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